The amount of electricity y generated by geothermal sources (in billions of kilowatts) from 2000 to 2009 can be modeled by the linear equation y-0.15x = 14.07, where x represents the number of years after 2000. Similarly, the amount of electricity y generated by
wind power (in billions of kilowatts) during the same time period can be modeled by the linear equation 5.13x - y = 21.88. Answer parts a, b,
and c below.

(a) The data used to form these two models were incomplete. It is impossible to tell from the data the year in which the electricity
generated by geothermal sources was the same as the electricity generated by wind power. Use matrix methods to estimate the year in
which this occurred.

This occurred in __ (Round down to the nearest year.)